Biology Help!?

Question

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A child is born to a mother with blood type IA IB and a father with blood type IBi. Which of the following blood types is impossible for the child to have?

AB

O

B

A

Answer 1

A Chart helps

Type B blood can be heterozygous, BO or homozygous BB

Mother >----A-----B
-------------
Father |
-----------|
--B-------|---AB----BB
-----------|
--O-------|---AO----BO

You can see from this simple chart, the possible choices are:

1/4 AB, 1/4 BB, 1/4 AO and 1/4 BO

The AO would be expressed as type A

The BO would be expressed as type B

Mother >---- A----B
-------------
Father |
-----------|
--B-------|----AB---BB
-----------|
--B-------|----AB---BB

In this case, the choices would be 1/2 AB and 1/2 BB

This is complicated because we are all Chimera. Everyone has patches of cells in them, that came from their mother, their mother's mother and possibly several generations of mother's mother's cells.

There have been a number of cases where an ovary or testes, has a set of these cells making them up. Also sometimes these are found in the blood marrow, giving false information on the genetic complement of the person.

There was one case recently, where the mother had type O blood, or OO, the Father had type O blood, or OO, but one child was Type A and the other was Type B. On investigating the woman's ovaries, it turned out that one of them was composed of the cells from her mother, who was Type A blood, or AO. The Man, had one testes that when they took samples from it, had his mothers chromosomes in it, they were not XY as expected but XX. and his mothers blood type that was type B.

So while blood typing is often correct, it isn't always.

Answer 2

ab

Answer 3

I would say O.

Answer 4

A

Answer 5

what type is lB?

Answer 6

O

Answer 7

O

Answer 8

O